Results 131 to 140 of about 863,762 (375)

Space Economy and Sustainability: A Systematic Review

open access: yesSustainable Development, EarlyView.
ABSTRACT The space economy is booming thanks to the increasing investment of government agencies, private companies, and venture capitalists. From the beginning of the New Space era, the array of actors involved in the development of technologies for extra‐terrestrial activities has increased, as well as the downstream applications that foster ...
Marianna Valente   +2 more
wiley   +1 more source

Linear quadratic servo control of a reusable rocket engine [PDF]

open access: yes
A design method for a servo compensator is developed in the frequency domain using singular values. The method is applied to a reusable rocket engine.
Musgrave, Jeffrey L.
core   +1 more source

THE INVESTIGATION OF THE STABILITY OF THE PROPELLANT INTAKE IN CARRIER ROCKET WITH MONOPROPELLANT ROCKET ENGINE

open access: yesJournal of Dynamics and Vibroacoustics, 2015
The problem of propellant free oscillations in cylindrical and conical tanks is considered and solutions presented with boundary conditions on a free surface and the surface of intake which if speak figuratively provides a resistance to the fluid descent; the special attention was given to research influences the propellant intake on appearance Pogo ...
A. N. Temnov, M. I. Diachenko
openaire   +2 more sources

Stairway to impact or highway to failure? A cognitive perspective on business model design processes in nascent sustainable ventures

open access: yesStrategic Entrepreneurship Journal, EarlyView.
Abstract Research Summary Sustainable new ventures seeking to tackle grand challenges such as climate change or biodiversity loss through new business models face the difficult task of reconciling social and ecological goals with profit. To provide a better understanding of how founders balance such tensions and develop viable business models, this ...
Eduard Esau   +4 more
wiley   +1 more source

CRYO-ENGINEERING IN THE NUCLEAR ROCKET PROGRAM [PDF]

open access: yes, 1963
Among the many remarkable technological achievements which have enriched our lives in the years since World War II, few have been more exciting to the imagination than the recent spectacular developments in the field of rocketry. Rocket systems are now available, as we all know, with sufficient power to permit mankind to take an initial step toward an ...
openaire   +3 more sources

Resource redeployment as an entry advantage in resource‐poor settings

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Scarcity of productive factors poses a challenge for firms entering underdeveloped regions. We theorize that incumbent firms can overcome scarcity of skilled human capital in local labor markets by redeploying workers from existing units.
Jasmina Chauvin   +2 more
wiley   +1 more source

Small rocket engine Patent [PDF]

open access: yes, 1967
Regenerative cooling system for small rocket engine having restart capability and using noncryogenic hypergolic ...
Latto, W. T., Jr.
core   +1 more source

Structural and redundancy performance of power actuated fasteners as direct fastenings in fiber reinforced concrete

open access: yesStructural Concrete, EarlyView.
Abstract Currently, a wider development of modern concrete mixes in the construction industry is expected, such as concretes with alternative cement types and binders, recycled aggregates, but also concretes with dispersed fiber reinforcement to speed up our work in cutting greenhouse gases and making buildings last longer.
Alhussain Yousef, Panagiotis Spyridis
wiley   +1 more source

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